/*
 * OF6 企业数字化门户 · 视觉样式（商务宏伟）
 * Author: 缘境 (yvsm@zunyunkeji.com)
 */
:root {
  --primary: #1B4FD8;
  --primary-deep: #0A1F5C;
  --secondary: #3B82F6;
  --accent: #F5A623;
  --accent-dark: #D97706;
  --bg: #F3F6FB;
  --bg-card: #FFFFFF;
  --text: #0F1B33;
  --muted: #5B6B7C;
  --border: #D7E0EE;
  --shadow: 0 18px 50px rgba(10, 31, 92, .12);
  --radius: 18px;
  --font-display: "Cormorant Garamond", "Songti SC", "Noto Serif SC", serif;
  --font-body: "Source Sans 3", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(900px 420px at 80% -10%, rgba(59,130,246,.18), transparent 55%),
    radial-gradient(700px 360px at 0% 20%, rgba(27,79,216,.10), transparent 50%),
    linear-gradient(180deg, #EEF3FB 0%, var(--bg) 280px, var(--bg) 100%);
  line-height: 1.65;
  overflow-x: clip;
}
a { color: var(--primary); text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(100% - 32px, var(--max)); margin-inline: auto; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(243,246,251,.86);
  border-bottom: 1px solid rgba(215,224,238,.8);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 72px;
}
.logo { text-decoration: none; }
.logo-mark {
  font-family: var(--font-display);
  font-weight: 700; font-size: 1.85rem; letter-spacing: .08em;
  color: var(--primary-deep);
}
.main-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; }
.main-nav > a {
  color: var(--muted); font-size: .94rem; font-weight: 600; padding: 8px 2px;
  border-bottom: 2px solid transparent;
}
.main-nav > a:hover, .main-nav > a.active {
  color: var(--primary-deep); border-bottom-color: var(--accent);
}
.lang-switch { display: inline-flex; gap: 8px; align-items: center; margin-left: 8px; font-size: .88rem; }
.lang-switch a.active { color: var(--primary-deep); font-weight: 700; }
.nav-toggle {
  display: none; border: 1px solid var(--border); background: #fff;
  border-radius: 10px; padding: 8px 12px; cursor: pointer;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 22px; border-radius: 999px; border: 0;
  font: inherit; font-weight: 700; cursor: pointer; text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff !important; box-shadow: 0 10px 28px rgba(217,119,6,.28);
}
.btn-ghost, .btn-outline {
  background: transparent; color: #fff !important;
  border: 1px solid rgba(255,255,255,.45);
}
.section .btn-ghost, .section .btn-outline,
.cta-banner .btn-ghost {
  color: var(--primary-deep) !important;
  border-color: rgba(10,31,92,.22);
  background: #fff;
}
.site-footer .btn-outline {
  color: #fff !important; border-color: rgba(255,255,255,.35);
  background: rgba(255,255,255,.06);
}

.portal-hero {
  position: relative; min-height: min(92vh, 820px);
  display: grid; align-items: center;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(700px 340px at 50% 0%, rgba(59,130,246,.35), transparent 55%),
    linear-gradient(165deg, #071531 0%, #0A2A8F 42%, #123A9E 70%, #0A1F5C 100%);
}
.portal-hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-glow {
  position: absolute; border-radius: 50%; filter: blur(40px); opacity: .55;
  animation: glowDrift 12s ease-in-out infinite alternate;
}
.hero-glow-a {
  width: 420px; height: 420px; left: 8%; top: 18%;
  background: rgba(59,130,246,.45);
}
.hero-glow-b {
  width: 360px; height: 360px; right: 10%; bottom: 8%;
  background: rgba(245,166,35,.22);
  animation-delay: -4s;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 40%, #000 20%, transparent 75%);
  opacity: .45;
}
@keyframes glowDrift {
  from { transform: translate3d(0,0,0) scale(1); }
  to { transform: translate3d(24px,-18px,0) scale(1.08); }
}
.portal-hero-inner {
  position: relative; z-index: 1;
  text-align: center; padding: 96px 0 88px;
  animation: heroIn .9s ease both;
}
@keyframes heroIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
.brand-hero {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 6.4rem);
  font-weight: 700; letter-spacing: .14em;
  line-height: 1; color: #fff;
}
.portal-hero h1 {
  margin: 0 auto 16px;
  max-width: 16em;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.6vw, 2.75rem);
  font-weight: 600; line-height: 1.25;
}
.hero-lead {
  margin: 0 auto 28px;
  max-width: 36em;
  color: rgba(255,255,255,.82);
  font-size: 1.08rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

.section { padding: 72px 0; }
.section.alt {
  background: linear-gradient(180deg, rgba(255,255,255,.55), rgba(238,243,251,.9));
}
.section-head { margin-bottom: 28px; }
.section-head-center { text-align: center; }
.section-head h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 2.6vw, 2.3rem);
  font-weight: 700;
}
.section-head p { margin: 0 auto; color: var(--muted); max-width: 40em; }

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.matrix-tile {
  position: relative;
  display: block;
  padding: 28px 24px 24px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid rgba(215,224,238,.95);
  box-shadow: var(--shadow);
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  animation: tileIn .7s ease both;
  animation-delay: calc(var(--i, 0) * .07s);
}
@keyframes tileIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
.matrix-tile::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}
.matrix-tile:hover {
  transform: translateY(-4px);
  border-color: rgba(27,79,216,.35);
  box-shadow: 0 22px 48px rgba(10,31,92,.16);
}
.matrix-code {
  display: block;
  font-family: var(--font-display);
  font-size: .95rem; letter-spacing: .18em;
  color: var(--primary); font-weight: 700; margin-bottom: 10px;
}
.matrix-tile h3 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  color: var(--primary-deep);
}
.matrix-tile p { margin: 0 0 14px; color: var(--muted); font-size: .95rem; }
.matrix-tag {
  display: inline-block;
  font-size: .75rem; font-weight: 700; color: var(--primary);
  background: rgba(27,79,216,.08); padding: 5px 10px; border-radius: 999px;
}

.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: 1.2fr .8fr; gap: 22px; }
.card {
  background: var(--bg-card); border: 1px solid rgba(215,224,238,.95);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
}
.card p { margin: 0 0 14px; color: var(--muted); }
.tag {
  display: inline-block; font-size: .75rem; font-weight: 700; color: var(--primary);
  background: rgba(27,79,216,.08); padding: 5px 10px; border-radius: 999px; margin-bottom: 12px;
}
.product-card { text-align: center; }
.product-card .list-check {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  margin: 4px auto 0;
  max-width: 100%;
}
.product-card .list-check li {
  display: flex;
  align-items: flex-start;
  gap: .45em;
  padding-left: 0;
  text-align: left;
}
.product-card .list-check li::before {
  position: static;
  flex-shrink: 0;
  line-height: 1.65;
}
.product-title { margin: 0 0 8px; font-size: 1.15rem; }
.product-title-link { color: inherit; text-decoration: none; }
.product-title-link:hover { color: var(--primary); }
.center-link { text-align: center; margin-top: 26px; }

.page-hero { padding: 48px 0 12px; }
.page-hero h1 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}
.page-hero p { margin: 0; color: var(--muted); max-width: 42em; }

.about-hero {
  padding: 64px 0 40px;
  background:
    radial-gradient(600px 240px at 20% 0%, rgba(59,130,246,.25), transparent 60%),
    linear-gradient(160deg, #071531, #0A2A8F 70%);
  color: #fff;
}
.about-hero-inner { width: min(100% - 32px, var(--max)); margin-inline: auto; }
.about-hero h1 { font-family: var(--font-display); margin: 10px 0; font-size: clamp(2rem, 3.5vw, 2.8rem); }
.about-hero p { margin: 0; color: rgba(255,255,255,.82); max-width: 40em; }
.tag-light { background: rgba(255,255,255,.16); color: #fff; }
.about-grid { display: grid; grid-template-columns: 1.5fr .9fr; gap: 22px; }
.about-points { display: grid; gap: 12px; }
.about-point {
  background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px;
}
.about-point h3 { margin: 0 0 6px; font-size: 1.05rem; }
.about-point p { margin: 0; color: var(--muted); }
.about-side {
  background: #fff; border: 1px solid var(--border); border-radius: 18px;
  padding: 22px; box-shadow: var(--shadow); position: sticky; top: 92px;
}
.about-side dt { font-size: .8rem; color: var(--muted); margin-top: 12px; }
.about-side dd { margin: 4px 0 0; font-weight: 700; }
.about-side dt:first-child { margin-top: 0; }
.prose-strong { color: var(--text); }

.case-card { text-align: center; }
.case-card img {
  width: 100%; height: 168px; object-fit: cover; border-radius: 12px; margin-bottom: 14px;
  background: #E8EEF7;
}
.case-title { margin: 0; font-size: 1.05rem; line-height: 1.45; }
.case-title-link { color: inherit; text-decoration: none; }
.case-title-link:hover { color: var(--primary); }

.faq-item {
  border: 1px solid var(--border); border-radius: 14px; background: #fff;
  margin-bottom: 12px; overflow: hidden; box-shadow: 0 8px 24px rgba(10,31,92,.06);
}
.faq-item button {
  width: 100%; text-align: left; background: transparent; border: 0; cursor: pointer;
  padding: 18px 20px; font: inherit; font-weight: 700; color: var(--text);
  display: flex; justify-content: space-between; gap: 16px;
}
.faq-item .faq-a {
  display: none; padding: 0 20px 18px; color: var(--muted); margin: 0;
  border-top: 1px dashed var(--border); padding-top: 14px;
}
.faq-item.open .faq-a { display: block; }

.form {
  display: grid; gap: 14px; background: #fff; border: 1px solid var(--border);
  border-radius: 18px; padding: 26px; box-shadow: var(--shadow);
}
.form label { display: grid; gap: 6px; font-weight: 600; font-size: .92rem; }
.form input, .form select, .form textarea {
  width: 100%; border: 1px solid var(--border); border-radius: 12px;
  padding: 11px 12px; font: inherit; background: #fff;
}
.form textarea { min-height: 120px; resize: vertical; }
.form .hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }
.form-msg { font-size: .92rem; }
.form-msg.ok { color: #047857; }
.form-msg.err { color: #B91C1C; }

.cta-banner, .portal-cta {
  display: flex; justify-content: space-between; align-items: center; gap: 20px;
  padding: 28px 30px; border-radius: 20px;
  background:
    radial-gradient(500px 200px at 10% 0%, rgba(59,130,246,.28), transparent 55%),
    linear-gradient(120deg, #071531, #0A2A8F);
  color: #fff;
}
.cta-banner h2 { margin: 0 0 8px; font-family: var(--font-display); font-size: 1.6rem; }
.cta-banner p { margin: 0; color: rgba(255,255,255,.8); }
.cta-banner-actions { display: flex; flex-wrap: wrap; gap: 10px; }

.friend-links {
  margin-top: 20px; padding: 22px 0 0;
  background:
    radial-gradient(600px 240px at 10% 0%, rgba(59,130,246,.2), transparent 60%),
    #071531;
  color: rgba(255,255,255,.82);
}
.friend-links-inner {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 18px;
  padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.12);
}
.friend-links-title { margin: 0; font-size: .95rem; font-weight: 700; color: #fff; }
.friend-links-list {
  list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 16px;
}
.friend-links-list a { color: rgba(255,255,255,.78); font-size: .9rem; }
.friend-links-list a:hover { color: #fff; }
.friend-links + .site-footer { margin-top: 0; padding-top: 28px; }

.site-footer {
  margin-top: 20px;
  background:
    radial-gradient(600px 240px at 10% 0%, rgba(59,130,246,.2), transparent 60%),
    #071531;
  color: rgba(255,255,255,.82); padding: 52px 0 26px;
}
.site-footer a { color: #fff; }
.site-footer h3 { margin: 0 0 14px; color: #fff; font-size: 1rem; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 28px; }
.footer-list { list-style: none; margin: 0; padding: 0; }
.footer-list li { margin: 8px 0; }
.footer-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.footer-bottom {
  margin-top: 28px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.12);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .9rem;
}
.list-check { margin: 0; padding: 0; list-style: none; color: var(--muted); }
.list-check li { position: relative; padding-left: 1.4em; margin: 10px 0; }
.list-check li::before {
  content: "✓"; position: absolute; left: 0; color: var(--primary); font-weight: 700;
}
.meta { font-size: .9rem; color: var(--muted); margin-top: 10px; }
.narrow { max-width: 720px; }
.prose { color: var(--muted); line-height: 1.8; }

@media (max-width: 991px) {
  .matrix-grid, .grid-3, .footer-grid, .about-grid, .grid-2 { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: inline-flex; }
  .main-nav {
    display: none; width: 100%; flex-direction: column; align-items: flex-start;
    padding: 8px 0 16px;
  }
  .main-nav.open { display: flex; }
  .header-inner { flex-wrap: wrap; }
  .about-side { position: static; }
  .cta-banner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 768px) {
  .matrix-grid, .grid-3, .grid-2, .footer-grid, .about-grid { grid-template-columns: 1fr; }
  .portal-hero-inner { padding: 72px 0 64px; }
}